CVE-2025-55266
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedHCL Aftermarket DPC is affected by Session Fixation which allows attacker to takeover the user's session and use it carry out unauthorized transaction behalf of the user.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceHCL Aftermarket DPC is vulnerable to Session Fixation, a web authentication flaw where the application fails to regenerate session identifiers upon successful user login. An attacker can pre-establish or predict a session ID, then intercept or force the victim to use that same ID, enabling post-authentication session hijacking for unauthorized transactions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 1.0.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify installed HCL Aftermarket Cloud versionAccess the application admin panel or check system information to identify the exact version number of HCL Aftermarket Cloud installed in your environmentAffected if The installed version is 1.0.0 exactly, as this is the only version listed as affected in the CVE advisory
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Test session ID behavior after authenticationLog into the application with a test account, noting the session ID before and after successful authentication (check cookies or session headers using browser dev tools or a proxy)Affected if The session ID remains identical before and after login, indicating the application does not regenerate session identifiers upon successful authentication
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Inspect session management configurationReview application configuration files or admin settings related to session management for any evidence of session ID regeneration being disabled or missingAffected if No session ID regeneration mechanism is configured or the configuration shows pre-login and post-login session IDs are being reused
You are affected if running HCL Aftermarket Cloud version 1.0.0 and the session identifier does not change after successful user authentication, confirming the session fixation vulnerability exists in your environment.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement session ID regeneration upon successful authentication - invalidate the pre-login session ID and issue a fresh, cryptographically random session identifier immediately after the user authenticates, then continue using only the new ID.
- Consultation2.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-55266 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-55266 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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